What is ETH? Ethereum Coin Functions and Applications Explained

You may have heard the analogy: "If Bitcoin is digital gold, then what is ETH?"

The answer to "What is ETH?" goes far beyond simply being the "second-largest cryptocurrency by market cap."

ETH is the native cryptocurrency of the Ethereum blockchain, serving not only as a store of value but also as the lifeblood of decentralized applications (DApps), DeFi, and the NFT ecosystem.

What is ETH?

ETH is the native token of the Ethereum platform, created in 2015 by Vitalik Buterin and others. Its primary purpose was to establish a blockchain capable of executing smart contracts.

Unlike Bitcoin, ETH prioritizes functionality, with key characteristics including:

Transaction medium for paying gas fees (costs to run smart contracts).
Fuel for DApps, enabling their operation and functionality.
Staking (PoS) participation, securing the network and earning rewards.

These features make ETH an indispensable asset for blockchain infrastructure.

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Key Use Cases of ETH

ETH isn’t just an investment—it powers the decentralized economy. Major applications include:

Gas Fees: ETH is required for all Ethereum-based transactions and smart contract executions.
DeFi Participation: ETH serves as collateral in protocols like Uniswap and Aave.
NFT Ecosystem: Most NFT projects are built on Ethereum, with ETH as the primary currency.
Staking Rewards: Since Ethereum’s transition to Proof-of-Stake (PoS), holders earn passive income by staking ETH.

How Does ETH Compare to Other Cryptocurrencies?

| Cryptocurrency | Primary Function | Issuer | Consensus Mechanism |
|--------------------|----------------------------|--------------------------|-------------------------|
| Ethereum (ETH) | Smart contract platform | Ethereum Foundation | Proof-of-Stake (PoS) |
| USDT | Stablecoin (pegged to USD) | Tether | Centralized |
| ETC | Original Ethereum chain | Ethereum Classic community | Proof-of-Work (PoW) |

👉 Learn how ETH pairs with stablecoins

FAQs

1. Is ETH a good long-term investment?

ETH’s utility in DeFi and NFTs positions it as a foundational asset, though market volatility requires careful risk assessment.

2. How do gas fees work?

Gas fees are payments in ETH to prioritize transactions on Ethereum. High network congestion increases fees.

3. Can ETH be mined?

No—since the Merge (2022), Ethereum shifted to PoS, replacing mining with staking.

4. What’s the difference between ETH and BTC?

BTC is primarily a store of value ("digital gold"), while ETH fuels a programmable blockchain ecosystem.

Conclusion: ETH Powers the Decentralized Future

Understanding what ETH is means grasping the backbone of Web3. From DeFi to NFTs, ETH has evolved from a "top cryptocurrency" to the most utilized blockchain asset, driving innovation across industries.